Dia Ky Thuat Bac Son Joint Stock Company Address: No 8a, 48 To 46 Lane, Quan Hoa Ward, Cau Giay District, Ha Noi City Enterprise code: 0106135864 Phone: 02437481794 Representative: Hoang Van Sy Quan Hoa Ward, Cau Giay District, Ha Noi CityFounding date: 27 - 3 - 2013